Seems easy but unable to do it. Please someone tell me how to solve.
Both roots can be either 0 or both roots can be 1 as 0^2 = 0 and 1^2 = 1.
I guess this should give the answer.
ohk got it but you are missing one more case. w=w^2 (complex no.)
Ah yes. Sorry and thanks.
Actually the roots satisfy z^4=z